Both chips are based on Andigilog's ThermalEdge technology and tout a resolution of 0.25&degC. The chips, compliant with SMBus 2.0, include support for three fans, four fan tachometer inputs, high- and low-speed PWM, voltage monitoring, and assignment of temperature zones. They include circuitry to lock critical controls after initialization, support 3.3-volt operation with 5- or 12-volt fans, and have a shutdown mode to conserve power consumption.

The devices also support Intel's automatic fan speed control algorithm, which enables independent fan control apart from the system BIOS. The aSC7611 facilitates automatic fan speed control for three temperature zones: One internal and two remote diode temperature readings. The aSC7621 facilitates four thermal management zones: One internal and two remote diode readings along with the CPU through PECI. In addition, the aSC7621 can map any temperature to any zone for increased flexibility for thermal management configuration.

Click here and here for the product datasheets.
Samples and an evaluation kit are available now with production planned for the end of the year. The aSC7621, in a 24-pin QSOP, will be priced at $1.45 each in 1k quantities, and the aSC7611 at 1.25 each.